Fix issue with upkg.json not making it into the release tarball

Author: andsens

.github/workflows/release.yaml

@@ -59,7 +59,7 @@ jobs:
         printf '{
           "name": "docopt-lib.sh"
           "version": "${{ steps.version.outputs.tag }}"
-        }'
+        }' >upkg.json
         tar -czf ../docopt-lib.sh-${{ steps.version.outputs.tag }}.tar.gz *
     - name: Get release notes from tag
       id: tag-message